A temperature monitoring system for plant cultivation

Abstract

The invention discloses a temperature monitoring system for plant cultivation, and relates to the technical field of temperature monitoring. The invention realizes temperature monitoring by combining a monitoring tube, a thin-walled tube section and a sliding piston, and utilizing the thermal expansion of kerosene to push the sliding piston, thereby driving the screw and the pointer to rotate. The resistance change alarm system consists of a sliding electrode ring and a top electrode ring, and triggers an alarm when the temperature is abnormal. The user can flexibly set the alarm temperature threshold by adjusting the position of the rotating rod and the sliding conductive needle. The stable structural design includes multi-point support of the strengthening limiting ring, synchronous pulley and supporting screw rod to ensure that the equipment will not sink during long-term use, thereby ensuring the stability and reliability of the equipment. The overall design improves the accuracy, applicability and safety of temperature monitoring.

Description

Technical Field

[0001] The invention relates to the technical field of temperature monitoring, in particular to a temperature monitoring system for plant cultivation. Background Art

[0002] Existing soil temperature monitoring equipment usually uses simple temperature sensors buried in the soil, and these devices have many defects in practical applications. First, since the sensor is directly exposed to the soil, it is easily affected by external environmental factors such as humidity and pressure changes, resulting in inaccurate measurement data and even damage to the sensor. In addition, the existing equipment lacks the function of automatically adjusting the depth. Over time, the sensor may gradually sink or tilt, affecting the stability and accuracy of long-term monitoring. These shortcomings make the existing technology limited in practical application and cannot meet the needs of accurate and continuous monitoring of soil temperature. Especially in fields such as agriculture and environmental monitoring, precise control of temperature is crucial, and the limitations of existing equipment are particularly prominent. Therefore, there is an urgent need for a temperature monitoring device that can overcome the above shortcomings to improve the accuracy, reliability and applicability of monitoring. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a temperature monitoring system for plant cultivation, comprising a monitoring tube, a thin-walled tube section is arranged at the bottom of the monitoring tube, which is used to increase the heat conduction efficiency, wherein a sliding piston is arranged on the inner wall of the monitoring tube for sliding sealing, a screw is fixedly installed on the supporting chassis, a piston resistance sliding rod is coaxially slidably inserted in the screw, and the piston resistance sliding rod also cooperates with the sliding piston sliding seal; a limit ring and a sliding electrode ring are fixedly installed on the top of the screw, wherein the sliding electrode ring cooperates with the piston resistance sliding rod for sliding conduction, a top electrode ring is fixed on the top of the piston resistance sliding rod, and a tension spring is fixedly installed on the top electrode ring.

[0004] Preferably, the threaded sleeve on the circumferential surface of the screw is provided with an output drive gear, which is rotatably mounted on a drive gear frame, which is fixed on a supporting chassis, and the supporting chassis is coaxially fixedly matched with the top end of the monitoring tube, wherein the drive gear frame and the screw are slidably matched in a spline manner; a limit ring is in contact with the upper surface of the drive gear frame to limit the movement range of the screw.

[0005] Preferably, a tension spring frame support frame is fixedly mounted on the driving gear frame, a gearbox is fixedly mounted on the tension spring frame support frame, an output gear meshing with the output driving gear is fixedly mounted on the input shaft of the gearbox, wherein a stabilizing rib is also fixedly mounted on the supporting chassis, and the stabilizing rib is also fixedly matched with the gearbox.

[0006] Preferably, a tension spring frame is fixedly mounted on the tension spring frame support frame, a tension spring is arranged inside the tension spring frame, and two ends of the tension spring are respectively fixed to the tension spring frame and the top electrode ring.

[0007] Preferably, an arc-shaped resistor bar support plate is fixedly mounted on the tension spring sleeve support frame, an arc-shaped resistor bar is provided at the circumference of the upper surface of the arc-shaped resistor bar support plate, a sliding conductive needle is provided on the arc-shaped resistor bar for conductive contact and sliding, and the sliding conductive needle is fixed on the adjusting rotating rod.

[0008] Preferably, a crossbeam frame is fixedly mounted on the arc-shaped resistor bar support disk, a hollow sleeve rod is fixedly mounted at the center of the crossbeam frame, wherein the hollow sleeve rod is rotatably sleeved on the circumferential surface of the adjusting rotating rod, an actuator gear is rotatably sleeved on the circumferential surface of the hollow sleeve rod, and a hollow shaft sleeve is coaxially fixed on the actuator gear and rotatably cooperates with the hollow sleeve rod.

[0009] Preferably, an intermediate gear meshing with the execution gear is rotatably mounted on the crossbeam frame, wherein the intermediate gear is fixed on the output shaft of the gearbox.

[0010] Preferably, a dial is fixedly mounted on the crossbeam frame, a pointer is arranged on the upper surface of the dial, and the pointer is fixedly matched with the hollow shaft sleeve to drive the rotation of the pointer.

[0011] Preferably, a shell is fixedly mounted on the supporting chassis, and a transparent plate is fixed on the top of the shell, wherein the top end of the adjusting rotating rod extends above the upper surface of the transparent plate.

[0012] Preferably, a reinforcing limiting ring is also fixed on the inner wall of the outer shell, and three equidistantly arranged synchronous pulleys are rotatably installed between the support chassis and the reinforcing limiting ring. A supporting screw rod is vertically slidable in a spline manner on each synchronous pulley. The supporting screw rod is threadedly matched with the reinforcing limiting ring and the support chassis, and the three synchronous pulleys are connected by a synchronous belt transmission. A hexagonal prism groove is provided at the top of each supporting screw rod to facilitate the wrench to drive the supporting screw rod to rotate, and a bottom support plate is rotatably installed at the bottom end of each supporting screw rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) Through the mechanical transmission system, the temperature change is converted into the rotation display of the pointer, avoiding the data error problem that may be caused by electronic sensors. This design not only improves the accuracy of measurement, but also maintains stable operation in harsh environments, and has high practical value;

[0015] (2) Through the cooperation of the rotating support screw and the synchronous pulley, the monitoring tube can be stably maintained at the predetermined depth to prevent sinking or tilting. This function is particularly important in long-term monitoring and greatly improves the stability and reliability of the equipment;

[0016] (3) The relative movement of the sliding electrode ring and the top electrode ring is used to trigger the alarm system, which is an innovative temperature alarm mechanism. The system can issue an alarm in time when the temperature is abnormal, ensuring the safety of the temperature in the monitoring area;

[0017] (4) By adjusting the position of the rotating rod and the sliding conductive needle, the trigger temperature threshold of the alarm system can be flexibly adjusted. This design not only increases the flexibility of the device, but also allows for personalized settings according to different application scenarios to meet the diverse needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at point A in the middle.

[0020] Figure 3 It is a structural schematic diagram of the dial of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the arc-shaped resistor strip of the present invention.

[0022] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point B in the middle.

[0023] Figure 6 It is a schematic diagram of the structure of the sliding conductive needle of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the support frame of the tension spring sleeve frame of the present invention.

[0025] Figure 8 It is a schematic diagram of the structure of the thin-walled pipe section of the present invention.

[0026] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure at point C in the middle.

[0027] Fig.10 It is a schematic diagram of the screw structure of the present invention.

[0028] Fig.11 For the present invention Fig.10 Schematic diagram of the structure at point D in the middle.

[0029] In the figure: 101-monitoring tube; 102-thin-walled tube section; 103-screw; 104-support chassis; 105-sliding piston; 106-piston resistance sliding rod; 107-sliding electrode ring; 108-limiting ring; 109-output driving gear; 110-driving gear frame; 111-top electrode ring; 112-tension spring frame; 113-tension spring; 114-tension spring frame support frame; 115-output gear; 116-stabilizing rib; 117-gearbox; 11 8-arc-shaped resistor bar support plate; 119-arc-shaped resistor bar; 120-sliding conductive needle; 121-adjusting rotating rod; 122-beam frame; 123-intermediate gear; 124-executing gear; 125-hollow sleeve rod; 126-dial; 127-housing; 128-transparent plate; 129-pointer; 130-hollow shaft sleeve; 131-support screw rod; 132-bottom support plate; 133-synchronous pulley; 134-synchronous belt; 135-reinforced limiting ring. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-11 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0031] The present invention provides a temperature monitoring system for plant cultivation, comprising a monitoring tube 101, wherein a thin-walled tube section 102 is arranged at the bottom of the monitoring tube 101 for increasing the heat conduction efficiency, wherein a sliding piston 105 is arranged on the inner wall of the monitoring tube 101 in a sliding seal, a screw rod 103 is fixedly installed on a supporting chassis 104, a piston resistance slide rod 106 is coaxially slidably inserted in the screw rod 103, and the piston resistance slide rod 106 is also slidably sealed with the sliding piston 105; a limit ring 108 and a sliding electrode ring 107 are fixedly installed at the top end of the screw rod 103, wherein the sliding electrode ring 107 is slidably and electrically conductively matched with the piston resistance slide rod 106, a top electrode ring 111 is fixedly installed at the top end of the piston resistance slide rod 106, and a tension spring 113 is fixedly installed on the top electrode ring 111. The circumferential surface of the screw rod 103 is threadedly sleeved with an output drive gear 109, which is rotatably mounted on a drive gear frame 110, which is fixed on a support chassis 104, which is coaxially fixedly matched with the top of the monitoring tube 101, wherein the drive gear frame 110 and the screw rod 103 are slidably matched in a spline manner; the limit ring 108 is in contact with the upper surface of the drive gear frame 110 to limit the movement range of the screw rod 103. A tension spring sleeve support frame 114 is fixedly mounted on the drive gear frame 110, and a gearbox 117 is fixedly mounted on the tension spring sleeve support frame 114, and an output gear 115 meshing with the output drive gear 109 is fixedly mounted on the input shaft of the gearbox 117, wherein a stabilizing rib 116 is also fixedly mounted on the support chassis 104, and the stabilizing rib 116 is also fixedly matched with the gearbox 117. A tension spring sleeve support frame 114 is fixedly mounted with a tension spring sleeve 112, a tension spring 113 is arranged inside the tension spring sleeve 112, and the two ends of the tension spring 113 are respectively fixed to the tension spring sleeve 112 and the top electrode ring 111. An arc-shaped resistor bar support disk 118 is fixedly mounted on the tension spring sleeve support frame 114, an arc-shaped resistor bar 119 is arranged at the circumference of the upper surface of the arc-shaped resistor bar support disk 118, and a sliding conductive needle 120 is arranged on the arc-shaped resistor bar 119 for conductive contact and sliding, and the sliding conductive needle 120 is fixed on the adjustment rotating rod 121. A beam frame 122 is fixedly mounted on the arc-shaped resistor bar support plate 118, and a hollow sleeve rod 125 is fixedly mounted at the center of the beam frame 122, wherein the hollow sleeve rod 125 is rotatably sleeved on the circumferential surface of the adjusting rotating rod 121, and an execution gear 124 is rotatably sleeved on the circumferential surface of the hollow sleeve rod 125, and a hollow sleeve 130 rotatably matched with the hollow sleeve rod 125 is coaxially fixed on the execution gear 124. An intermediate gear 123 meshing with the execution gear 124 is rotatably mounted on the beam frame 122, wherein the intermediate gear 123 is fixed on the output shaft of the gearbox 117. A dial plate 126 is fixedly mounted on the beam frame 122, and a pointer 129 is arranged on the upper surface of the dial plate 126, and the pointer 129 is fixedly matched with the hollow sleeve 130 to drive the rotation of the pointer 129.A housing 127 is fixedly mounted on the support chassis 104, and a transparent plate 128 is fixed on the top of the housing 127, wherein the top end of the adjustment rotating rod 121 extends above the upper surface of the transparent plate 128. A reinforcing limiting ring 135 is also fixed on the inner wall of the housing 127, and three equidistantly arranged synchronous pulleys 133 are rotatably mounted between the support chassis 104 and the reinforcing limiting ring 135, and each synchronous pulley 133 is vertically slidably provided with a support screw 131 in a spline manner, and the support screw 131 is threadedly matched with the reinforcing limiting ring 135 and the support chassis 104, and the three synchronous pulleys 133 are connected by a synchronous belt 134, and each support screw 131 is provided with a hexagonal prism groove at the top end, so that the support screw 131 can be driven by a wrench to rotate, and a bottom support plate 132 is rotatably mounted at the bottom end of each support screw 131.

[0032] The working principle of a temperature monitoring system for plant cultivation disclosed in the present invention is as follows: a monitoring tube 101 is inserted into the soil whose temperature needs to be monitored. The depth of the monitoring tube 101 inserted into the soil is different as needed. By rotating one of the supporting screw rods 131, the rotation of the supporting screw rod 131 will drive the synchronous pulley 133 to rotate. The synchronous pulley 133 makes all the synchronous pulleys 133 rotate synchronously through the synchronous belt 134. The rotation of the synchronous pulley 133 will drive the remaining supporting screw rods 131 to rotate, so all the supporting screw rods 131 will move vertically. By changing the distance between the bottom supporting plate 132 and the supporting chassis 104, it can play a supporting role and prevent the monitoring tube 101 from being gradually inserted into deeper soil over time.

[0033] When the temperature of the soil rises, the kerosene inside the thin-walled pipe section 102 is heated, and there is no thermal expansion, thereby pushing the sliding piston 105 to slide upward in the monitoring tube 101. The movement of the sliding piston 105 drives the screw 103 to move upward (because the top of the piston resistance slide rod 106 has been supported by the tension spring sleeve support frame 114 at the beginning, the piston resistance slide rod 106 cannot move with the screw 103, so the two produce relative sliding). In the process of the screw 103 moving upward, the output drive gear 109 is driven to rotate (the screw 103 adopts a larger pitch), and the rotation of the output drive gear 109 drives the output gear 115 to rotate. The output gear 115 drives the input shaft of the gearbox 117 to rotate, and the output shaft of the gearbox 117 drives the intermediate gear 123 to rotate. The intermediate gear 123 drives the execution gear 124 to rotate, and the execution gear 124 drives the pointer 129 to rotate through the hollow shaft sleeve 130. At this time, the user can observe the position where the pointer 129 stays on the dial 126 through the pointer 129, thereby displaying the corresponding temperature.

[0034] When the screw rod 103 moves upward, it will also drive the sliding electrode ring 107 to move upward. Since the piston resistor slide rod 106 cannot move upward at this time, the sliding electrode ring 107 will slide on the piston resistor slide rod 106, so that the distance between the sliding electrode ring 107 and the top electrode ring 111 is reduced, which will cause the resistance between the sliding electrode ring 107 and the top electrode ring 111 to decrease (the top electrode ring 111 is electrically connected to the piston resistor slide rod 106 and the sliding electrode ring 107, and the sliding electrode ring 107 and the top electrode ring 111 are set in series in the circuit). Similarly, when the temperature decreases, the screw rod 103 cannot move downward under the action of the limit ring 108 (here it means that the screw rod 103 has moved to the lowest point). At this time, due to the decrease in pressure inside the thin-walled tube section 102, the piston resistor slide rod 106 slides downward, and the tension spring 113 is in a stretched state. At this time, the top electrode ring 111 will still be close to the sliding electrode ring 107, resulting in a decrease in the resistance between the two. When the resistance value is lower than the set value, an alarm is sounded to prove that the temperature of the soil exceeds the standard. Specifically, the arc-shaped resistor bar 119 and the sliding conductive needle 120 are connected in series with the sliding electrode ring 107 and the top electrode ring 111 in a DC circuit (a warning light can also be connected in series to prevent the circuit from short-circuiting), and an NPN transistor is set in parallel on the arc-shaped resistor bar 119 and the sliding conductive needle 120, wherein the base of the NPN transistor is connected to the high potential of the power supply, and the emitter of the NPN transistor is connected to the low potential point of the power supply (mainly depending on whether the arc-shaped resistor bar 119 or the sliding conductive needle 120 is connected to the positive pole of the power supply, for example, when the arc-shaped resistor bar 119 is close to the positive pole of the power supply, the base of the NPN transistor is connected to the arc-shaped resistor bar 119). When the user rotates the adjustment rotating rod 121, the sliding conductive needle 120 will be driven to rotate. The sliding conductive needle 120 will stop at different positions of the arc-shaped resistor bar 119 during rotation, so that the resistance value formed between the sliding conductive needle 120 and the arc-shaped resistor bar 119 is different (one end of the arc-shaped resistor bar 119 and the sliding conductive needle 120 are connected in series in the circuit). When the resistance value between the sliding electrode ring 107 and the top electrode ring 111 decreases, the potential difference between the sliding electrode ring 107 and the top electrode ring 111 will also decrease, thereby causing the potential difference between the arc-shaped resistor bar 119 and the sliding conductive needle 120 to increase. When the potential difference increases to greater than 0.7V, the collector and emitter of the NPN transistor are connected, and the collector and emitter of the NPN transistor are connected in series in the start-up circuit of the alarm, thereby triggering the alarm.Similarly, when the adjustment rotating rod 121 rotates, that is, when the sliding conductive needle 120 slides on the arc-shaped resistor bar 119, the resistance between the arc-shaped resistor bar 119 and the sliding conductive needle 120 will also change, thereby changing the resistance between the sliding electrode ring 107 and the top electrode ring 111, to what extent the potential difference between the arc-shaped resistor bar 119 and the sliding conductive needle 120 can be greater than 0.7V, that is, or changing the triggering threshold of the sliding electrode ring 107 and the top electrode ring 111, thereby adjusting the temperature at which the alarm can sound an alarm.

Claims

1. A temperature monitoring system for plant cultivation, characterized in that: The monitoring tube (101) comprises a monitoring tube (101), wherein a thin-walled tube section (102) is arranged at the bottom of the monitoring tube (101) for increasing the heat conduction efficiency, wherein a sliding piston (105) is arranged on the inner wall of the monitoring tube (101) in a sliding seal, a screw rod (103) is fixedly mounted on a supporting chassis (104), a piston resistance sliding rod (106) is coaxially slidably inserted in the screw rod (103), and the piston resistance sliding rod (106) is also slidably sealed with the sliding piston (105); A limit ring (108) and a sliding electrode ring (107) are fixedly mounted on the top of the screw rod (103), wherein the sliding electrode ring (107) and the piston resistance sliding rod (106) are slidably and conductively matched, a top electrode ring (111) is fixedly mounted on the top of the piston resistance sliding rod (106), and a tension spring (113) is fixedly mounted on the top electrode ring (111); An output drive gear (109) is threadedly sleeved on the circumferential surface of the screw rod (103). The output drive gear (109) is rotatably mounted on a drive gear frame (110). The drive gear frame (110) is fixed on a support chassis (104). The support chassis (104) is coaxially fixedly matched with the top end of the monitoring tube (101). The drive gear frame (110) and the screw rod (103) are slidably matched in a spline manner. The limit ring (108) is in contact with the upper surface of the drive gear frame (110). The driving gear frame (110) is fixedly mounted with a tension spring sleeve frame support frame (114), a gearbox (117) is fixedly mounted on the tension spring sleeve frame support frame (114), an output gear (115) meshing with an output driving gear (109) is fixedly mounted on the input shaft of the gearbox (117), wherein a stabilizing rib (116) is also fixedly mounted on the supporting chassis (104), and the stabilizing rib (116) is also fixedly matched with the gearbox (117); An arc-shaped resistor bar support plate (118) is fixedly mounted on the tension spring sleeve support frame (114); an arc-shaped resistor bar (119) is provided at the circumference of the upper surface of the arc-shaped resistor bar support plate (118); a sliding conductive needle (120) is provided on the arc-shaped resistor bar (119) for conductive contact and sliding; the sliding conductive needle (120) is fixed on the adjustment rotating rod (121); a crossbeam frame (122) is fixedly mounted on the arc-shaped resistor bar support plate (118); a hollow sleeve rod (121) is fixedly mounted at the center of the crossbeam frame (122); 25), wherein a hollow sleeve rod (125) is rotatably sleeved on the circumferential surface of an adjusting rotating rod (121), an executing gear (124) is rotatably sleeved on the circumferential surface of the hollow sleeve rod (125), a hollow shaft sleeve (130) rotatably matched with the hollow sleeve rod (125) is coaxially fixed on the executing gear (124); an intermediate gear (123) meshing with the executing gear (124) is rotatably mounted on the crossbeam frame (122), wherein the intermediate gear (123) is fixed on the output shaft of the gearbox (117).

2. A plant cultivation temperature monitoring system according to claim 1, characterized in that: A tension spring sleeve frame (112) is fixedly mounted on the tension spring sleeve frame support frame (114), a tension spring (113) is arranged inside the tension spring sleeve frame (112), and two ends of the tension spring (113) are respectively fixed to the tension spring sleeve frame (112) and the top electrode ring (111).

3. A temperature monitoring system for plant cultivation according to claim 2, characterized in that: A dial (126) is fixedly mounted on the crossbeam frame (122), a pointer (129) is arranged on the upper surface of the dial (126), and the pointer (129) is fixedly matched with a hollow shaft sleeve (130) to drive the pointer (129) to rotate.

4. A plant cultivation temperature monitoring system according to claim 3, characterized in that: A housing (127) is fixedly mounted on the supporting chassis (104), and a transparent plate (128) is fixed on the top of the housing (127), wherein the top end of the adjusting rotating rod (121) extends above the upper surface of the transparent plate (128).

5. A plant cultivation temperature monitoring system according to claim 4, characterized in that: A reinforcing limiting ring (135) is also fixed on the inner wall of the housing (127). Three equidistantly arranged synchronous pulleys (133) are rotatably mounted between the supporting chassis (104) and the reinforcing limiting ring (135). A supporting screw rod (131) is vertically slidably mounted on each synchronous pulley (133) in a splined manner. The supporting screw rod (131) is threadably engaged with the reinforcing limiting ring (135) and the supporting chassis (104). The three synchronous pulleys (133) are connected to each other via a synchronous belt (134). A hexagonal prism groove is arranged at the top end of each supporting screw rod (131) to facilitate a wrench to drive the supporting screw rod (131) to rotate. A bottom supporting plate (132) is rotatably mounted at the bottom end of each supporting screw rod (131).

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